dma sending stuff thru uart

firmware/modularkbd/Core/Src/main.c

@@ -117,6 +117,7 @@ uint16_t DEPTH = 0;
 uint16_t PORT_DEPTH[] = {0xFF, 0xFF, 0xFF, 0xFF};
 UART_HandleTypeDef* PARENT;
 UART_HandleTypeDef* PORTS[] = {&huart5, &huart1, &huart2, &huart4};
+								//North	 East	 South	 West
 
 extern USBD_HandleTypeDef hUsbDeviceFS;
 volatile uint8_t MODE = MODE_INACTIVE;
@@ -129,6 +130,7 @@ void SystemClock_Config(void);
 void handleUARTMessages(uint8_t *data, UART_HandleTypeDef *huart);
 void UART_DMA_SendReport(UART_HandleTypeDef *huart);
 void addUSBReport(uint8_t usageID);
+void handleUARTMessages(uint8_t *data, UART_HandleTypeDef *sender);
 void matrixScan(void);
 void resetReport(void);
 void sendMessage(void);
@@ -282,27 +284,27 @@ void SystemClock_Config(void)
 }
 
 /* USER CODE BEGIN 4 */
-//UART Message Requests Goes Here
-void HAL_UART_RxCpltCallback(UART_HandleTypeDef *huart){
-	//Parse recieved message
-	if (huart->Instance == USART1) {
-	    handleUARTMessage(&RX1Msg);
-	    HAL_UART_Receive_DMA(&huart1, (uint8_t*)&RX1Msg, sizeof(UARTMessage));
-	}
-	else if (huart->Instance == USART2) {
-		handleUARTMessage(&RX2Msg);
-	    HAL_UART_Receive_DMA(&huart2, (uint8_t*)&RX2Msg, sizeof(UARTMessage));
-	}
-	else if (huart->Instance == USART4) {
-		handleUARTMessage(&RX4Msg);
-	    HAL_UART_Receive_DMA(&huart4, (uint8_t*)&RX4Msg, sizeof(UARTMessage));
-	}
-	else if (huart->Instance == USART5) {
-		handleUARTMessage(&RX5Msg);
-	    HAL_UART_Receive_DMA(&huart5, (uint8_t*)&RX5Msg, sizeof(UARTMessage));
-	}
+// UART Message Requests Goes Here
+void HAL_UART_RxCpltCallback(UART_HandleTypeDef *huart) {
+    if (huart->Instance == USART1) {
+        handleUARTMessages((uint8_t*)&RX1Msg, huart);
+        HAL_UART_Receive_DMA(&huart1, (uint8_t*)&RX1Msg, sizeof(UARTMessage));
+    }
+    else if (huart->Instance == USART2) {
+        handleUARTMessages((uint8_t*)&RX2Msg, huart);
+        HAL_UART_Receive_DMA(&huart2, (uint8_t*)&RX2Msg, sizeof(UARTMessage));
+    }
+    else if (huart->Instance == UART4) {
+        handleUARTMessages((uint8_t*)&RX4Msg, huart);
+        HAL_UART_Receive_DMA(&huart4, (uint8_t*)&RX4Msg, sizeof(UARTMessage));
+    }
+    else if (huart->Instance == UART5) {
+        handleUARTMessages((uint8_t*)&RX5Msg, huart);
+        HAL_UART_Receive_DMA(&huart5, (uint8_t*)&RX5Msg, sizeof(UARTMessage));
+    }
 }
 
+
 void findBestParent(){
   //Find least depth parent
   uint16_t least_val = 0xFF;
@@ -321,11 +323,42 @@ void findBestParent(){
   }
 }
 
-//TODO: A function that gets called by RX Interrupt to handle messages that get sent
-void handleUARTMessages(uint8_t *data, UART_HandleTypeDef *sender){
-	//TODO: Handle messages coming from devices based on the message type.
+// Called when UART RX interrupt completes
+void handleUARTMessages(uint8_t *data, UART_HandleTypeDef *sender) {
+    UARTMessage msg;
+    UARTMessage reply;
+
+    // Parse incoming message into struct
+    memcpy(&msg, data, sizeof(UARTMessage));
+
+    switch(msg.TYPE) {
+
+        // Parent request reply
+        case 0xAA:
+            if(sender == &huart5) {
+                PORT_DEPTH[0] = msg.DEPTH;
+            } else if(sender == &huart1) {
+                PORT_DEPTH[1] = msg.DEPTH;
+            } else if(sender == &huart2) {
+                PORT_DEPTH[2] = msg.DEPTH;
+            } else if(sender == &huart4) {
+                PORT_DEPTH[3] = msg.DEPTH;
+            }
+            break;
+
+        // Requested to be a parent
+        case 0xFF:
+            reply.TYPE = 0xAA;
+            reply.DEPTH = DEPTH;   // use your local DEPTH
+            memset(reply.KEYPRESS, 0, sizeof(reply.KEYPRESS));
+
+            HAL_UART_Transmit(sender, (uint8_t*)&reply, sizeof(reply), HAL_MAX_DELAY);
+            break;
+
+    }
 }
 
+
 void addUSBReport(uint8_t usageID){
   if(usageID < 0x04 || usageID > 0x73) return; //Usage ID is out of bounds
   uint16_t bit_index = usageID - 0x04; //Offset, UsageID starts with 0x04. Gives us the actual value of the bit

firmware/modularkbd/Debug/Core/Src/main.cyclo

@@ -0,0 +1,9 @@
+../Core/Src/main.c:149:5:main	6
+../Core/Src/main.c:244:6:SystemClock_Config	3
+../Core/Src/main.c:288:6:HAL_UART_RxCpltCallback	5
+../Core/Src/main.c:308:6:findBestParent	4
+../Core/Src/main.c:327:6:handleUARTMessages	7
+../Core/Src/main.c:362:6:addUSBReport	3
+../Core/Src/main.c:370:6:matrixScan	4
+../Core/Src/main.c:383:6:resetReport	1
+../Core/Src/main.c:394:6:Error_Handler	1

firmware/modularkbd/Debug/Core/Src/main.su

@@ -0,0 +1,9 @@
+../Core/Src/main.c:149:5:main	24	static
+../Core/Src/main.c:244:6:SystemClock_Config	88	static
+../Core/Src/main.c:288:6:HAL_UART_RxCpltCallback	16	static
+../Core/Src/main.c:308:6:findBestParent	24	static
+../Core/Src/main.c:327:6:handleUARTMessages	48	static
+../Core/Src/main.c:362:6:addUSBReport	24	static
+../Core/Src/main.c:370:6:matrixScan	16	static
+../Core/Src/main.c:383:6:resetReport	8	static
+../Core/Src/main.c:394:6:Error_Handler	4	static,ignoring_inline_asm

firmware/modularkbd/Debug/Middlewares/ST/STM32_USB_Device_Library/Class/HID/Src/usbd_hid.cyclo

@@ -1,10 +1,10 @@
-../Middlewares/ST/STM32_USB_Device_Library/Class/HID/Src/usbd_hid.c:279:16:USBD_HID_Init	3
-../Middlewares/ST/STM32_USB_Device_Library/Class/HID/Src/usbd_hid.c:326:16:USBD_HID_DeInit	2
-../Middlewares/ST/STM32_USB_Device_Library/Class/HID/Src/usbd_hid.c:357:16:USBD_HID_Setup	18
-../Middlewares/ST/STM32_USB_Device_Library/Class/HID/Src/usbd_hid.c:489:9:USBD_HID_SendReport	4
-../Middlewares/ST/STM32_USB_Device_Library/Class/HID/Src/usbd_hid.c:522:10:USBD_HID_GetPollingInterval	2
-../Middlewares/ST/STM32_USB_Device_Library/Class/HID/Src/usbd_hid.c:552:17:USBD_HID_GetFSCfgDesc	2
-../Middlewares/ST/STM32_USB_Device_Library/Class/HID/Src/usbd_hid.c:572:17:USBD_HID_GetHSCfgDesc	2
-../Middlewares/ST/STM32_USB_Device_Library/Class/HID/Src/usbd_hid.c:592:17:USBD_HID_GetOtherSpeedCfgDesc	2
-../Middlewares/ST/STM32_USB_Device_Library/Class/HID/Src/usbd_hid.c:613:16:USBD_HID_DataIn	1
-../Middlewares/ST/STM32_USB_Device_Library/Class/HID/Src/usbd_hid.c:630:17:USBD_HID_GetDeviceQualifierDesc	1
+../Middlewares/ST/STM32_USB_Device_Library/Class/HID/Src/usbd_hid.c:304:16:USBD_HID_Init	3
+../Middlewares/ST/STM32_USB_Device_Library/Class/HID/Src/usbd_hid.c:351:16:USBD_HID_DeInit	2
+../Middlewares/ST/STM32_USB_Device_Library/Class/HID/Src/usbd_hid.c:382:16:USBD_HID_Setup	18
+../Middlewares/ST/STM32_USB_Device_Library/Class/HID/Src/usbd_hid.c:514:9:USBD_HID_SendReport	4
+../Middlewares/ST/STM32_USB_Device_Library/Class/HID/Src/usbd_hid.c:547:10:USBD_HID_GetPollingInterval	2
+../Middlewares/ST/STM32_USB_Device_Library/Class/HID/Src/usbd_hid.c:577:17:USBD_HID_GetFSCfgDesc	2
+../Middlewares/ST/STM32_USB_Device_Library/Class/HID/Src/usbd_hid.c:597:17:USBD_HID_GetHSCfgDesc	2
+../Middlewares/ST/STM32_USB_Device_Library/Class/HID/Src/usbd_hid.c:617:17:USBD_HID_GetOtherSpeedCfgDesc	2
+../Middlewares/ST/STM32_USB_Device_Library/Class/HID/Src/usbd_hid.c:638:16:USBD_HID_DataIn	1
+../Middlewares/ST/STM32_USB_Device_Library/Class/HID/Src/usbd_hid.c:655:17:USBD_HID_GetDeviceQualifierDesc	1

firmware/modularkbd/Debug/Middlewares/ST/STM32_USB_Device_Library/Class/HID/Src/usbd_hid.su

@@ -1,10 +1,10 @@
-../Middlewares/ST/STM32_USB_Device_Library/Class/HID/Src/usbd_hid.c:279:16:USBD_HID_Init	24	static
-../Middlewares/ST/STM32_USB_Device_Library/Class/HID/Src/usbd_hid.c:326:16:USBD_HID_DeInit	16	static
-../Middlewares/ST/STM32_USB_Device_Library/Class/HID/Src/usbd_hid.c:357:16:USBD_HID_Setup	32	static
-../Middlewares/ST/STM32_USB_Device_Library/Class/HID/Src/usbd_hid.c:489:9:USBD_HID_SendReport	32	static
-../Middlewares/ST/STM32_USB_Device_Library/Class/HID/Src/usbd_hid.c:522:10:USBD_HID_GetPollingInterval	24	static
-../Middlewares/ST/STM32_USB_Device_Library/Class/HID/Src/usbd_hid.c:552:17:USBD_HID_GetFSCfgDesc	24	static
-../Middlewares/ST/STM32_USB_Device_Library/Class/HID/Src/usbd_hid.c:572:17:USBD_HID_GetHSCfgDesc	24	static
-../Middlewares/ST/STM32_USB_Device_Library/Class/HID/Src/usbd_hid.c:592:17:USBD_HID_GetOtherSpeedCfgDesc	24	static
-../Middlewares/ST/STM32_USB_Device_Library/Class/HID/Src/usbd_hid.c:613:16:USBD_HID_DataIn	16	static
-../Middlewares/ST/STM32_USB_Device_Library/Class/HID/Src/usbd_hid.c:630:17:USBD_HID_GetDeviceQualifierDesc	16	static
+../Middlewares/ST/STM32_USB_Device_Library/Class/HID/Src/usbd_hid.c:304:16:USBD_HID_Init	24	static
+../Middlewares/ST/STM32_USB_Device_Library/Class/HID/Src/usbd_hid.c:351:16:USBD_HID_DeInit	16	static
+../Middlewares/ST/STM32_USB_Device_Library/Class/HID/Src/usbd_hid.c:382:16:USBD_HID_Setup	32	static
+../Middlewares/ST/STM32_USB_Device_Library/Class/HID/Src/usbd_hid.c:514:9:USBD_HID_SendReport	32	static
+../Middlewares/ST/STM32_USB_Device_Library/Class/HID/Src/usbd_hid.c:547:10:USBD_HID_GetPollingInterval	24	static
+../Middlewares/ST/STM32_USB_Device_Library/Class/HID/Src/usbd_hid.c:577:17:USBD_HID_GetFSCfgDesc	24	static
+../Middlewares/ST/STM32_USB_Device_Library/Class/HID/Src/usbd_hid.c:597:17:USBD_HID_GetHSCfgDesc	24	static
+../Middlewares/ST/STM32_USB_Device_Library/Class/HID/Src/usbd_hid.c:617:17:USBD_HID_GetOtherSpeedCfgDesc	24	static
+../Middlewares/ST/STM32_USB_Device_Library/Class/HID/Src/usbd_hid.c:638:16:USBD_HID_DataIn	16	static
+../Middlewares/ST/STM32_USB_Device_Library/Class/HID/Src/usbd_hid.c:655:17:USBD_HID_GetDeviceQualifierDesc	16	static